<template>
  <a-layout>
    <a-layout-content :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }">
      <h3 v-if="level1.length === 0">对不起，找不到相关文档!</h3>
      <a-row>
        <a-col :span="6">
          <a-tree v-if="level1.length > 0" :tree-data="level1" @select="onSelect" :field-names="{ title: 'name', key: 'id', value: 'id' }" :defaultExpandAll="true" :defaultSelectedKeys="defaultSelectedKeys"> </a-tree>
        </a-col>
        <a-col :span="18">
          <div>
            <h2>{{ doc.name }}</h2>
            <div>
              <span>阅读数：{{ doc.viewCount }}</span> &nbsp; &nbsp;
              <span>点赞数：{{ doc.voteCount }}</span>
            </div>
            <a-divider style="height: 2px; background-color: #9999cc" />
          </div>
          <div class="wangeditor" :innerHTML="html"></div>
          <div class="vote-div">
            <a-button type="primary" shape="round" :size="'large'" @click="vote" style="height: 55px">
              <template #icon><LikeOutlined /> &nbsp;点赞：{{ doc.voteCount }} </template>
            </a-button>
          </div>
        </a-col>
      </a-row>
    </a-layout-content>
  </a-layout>
</template>
<script lang="ts">
import { defineComponent, onMounted, ref } from 'vue'
import axios from 'axios'
import { message } from 'ant-design-vue'
import { Tool } from '@/utils/tool'
import { useRoute } from 'vue-router'

export default defineComponent({
  name: 'Doc',
  setup() {
    const route = useRoute()
    const docs = ref()
    const html = ref()
    const defaultSelectedKeys = ref()
    defaultSelectedKeys.value = []

    //当前选中的文档信息
    const doc = ref()
    doc.value = {}

    /**
     * 一级文档树，children属性就是二级文档
     * [{
     *   id: "",
     *   name: "",
     *   children: [{
     *     id: "",
     *     name: "",
     *   }]
     * }]
     */
    const level1 = ref() // 一级文档树，children属性就是二级文档
    level1.value = []

    /**
     * 数据查询
     **/
    const handleQuery = () => {
      axios.get('/doc/all/' + route.query.ebookId).then((response) => {
        const data = response.data
        if (data.success) {
          docs.value = data.content

          level1.value = []
          level1.value = Tool.array2Tree(docs.value, 0)

          if (Tool.isNotEmpty(level1.value)) {
            defaultSelectedKeys.value = [level1.value[0].id]
            handleQueryContent(level1.value[0].id)

            //初始线上文档信息
            doc.value = level1.value[0]
          }
        } else {
          message.error(data.message)
        }
      })
    }

    /**
     * 内容查询
     **/
    const handleQueryContent = (id: number) => {
      axios.get('/content/findContent/' + id).then((response) => {
        const data = response.data
        if (data.success) {
          html.value = data.content
        } else {
          message.error(data.message)
        }
      })
    }

    const onSelect = (selectedKeys: any, info: any) => {
      if (Tool.isNotEmpty(selectedKeys)) {
        //选中某一个节点时，加载该节点的文档信息
        doc.value = info.selectedNodes[0]
        // 加载内容
        handleQueryContent(selectedKeys[0])
      }
    }

    // 点赞
    const vote = () => {
      axios.get('/doc/vote/' + doc.value.id).then((response) => {
        const data = response.data
        if (data.success) {
          doc.value.voteCount++
        } else {
          message.error(data.message)
        }
      })
    }

    onMounted(() => {
      handleQuery()
    })

    return {
      level1,
      html,
      onSelect,
      defaultSelectedKeys,
      doc,
      vote,
    }
  },
})
</script>

<style>
/* wangeditor默认样式, 参照: http://www.wangeditor.com/doc/pages/02-%E5%86%85%E5%AE%B9%E5%A4%84%E7%90%86/03-%E8%8E%B7%E5%8F%96html.html */
/* table 样式 */
.wangeditor table {
  border-top: 1px solid #ccc;
  border-left: 1px solid #ccc;
}
.wangeditor table td,
.wangeditor table th {
  border-bottom: 1px solid #ccc;
  border-right: 1px solid #ccc;
  padding: 3px 5px;
}
.wangeditor table th {
  border-bottom: 2px solid #ccc;
  text-align: center;
}

/* blockquote 样式 */
.wangeditor blockquote {
  display: block;
  border-left: 8px solid #d0e5f2;
  padding: 5px 10px;
  margin: 10px 0;
  line-height: 1.4;
  font-size: 100%;
  background-color: #f1f1f1;
}

/* code 样式 */
.wangeditor code {
  display: inline-block;
  *display: inline;
  *zoom: 1;
  background-color: #f1f1f1;
  border-radius: 3px;
  padding: 3px 5px;
  margin: 0 3px;
}
.wangeditor pre code {
  display: block;
}

/* ul ol 样式 */
.wangeditor ul,
ol {
  margin: 10px 0 10px 20px;
}

/* 和antdv p冲突，覆盖掉 */
.wangeditor blockquote p {
  font-family: 'YouYuan';
  margin: 20px 10px !important;
  font-size: 16px !important;
  font-weight: 600;
}

.vote-div {
  padding: 15px;
  text-align: center;
}

/* 图片自适应 */
.wangeditor img {
  max-width: 100%;
  height: auto;
}

/* 视频自适应 */
.wangeditor iframe {
  width: 100%;
  height: 400px;
}
</style>
